首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3272315篇
  免费   271301篇
  国内免费   13788篇
耳鼻咽喉   44555篇
儿科学   104743篇
妇产科学   83580篇
基础医学   525907篇
口腔科学   87564篇
临床医学   295357篇
内科学   570266篇
皮肤病学   88783篇
神经病学   281582篇
特种医学   128508篇
外国民族医学   329篇
外科学   506157篇
综合类   101143篇
现状与发展   23篇
一般理论   2307篇
预防医学   277887篇
眼科学   74714篇
药学   222940篇
  24篇
中国医学   9354篇
肿瘤学   151681篇
  2021年   55012篇
  2020年   35107篇
  2019年   58102篇
  2018年   71093篇
  2017年   54248篇
  2016年   59867篇
  2015年   73938篇
  2014年   108160篇
  2013年   173534篇
  2012年   89388篇
  2011年   89270篇
  2010年   116046篇
  2009年   120494篇
  2008年   75924篇
  2007年   78421篇
  2006年   89444篇
  2005年   84624篇
  2004年   86805篇
  2003年   77734篇
  2002年   67312篇
  2001年   94903篇
  2000年   87493篇
  1999年   89080篇
  1998年   64435篇
  1997年   62476篇
  1996年   60267篇
  1995年   55849篇
  1994年   50124篇
  1993年   46645篇
  1992年   62627篇
  1991年   59736篇
  1990年   56850篇
  1989年   56211篇
  1988年   51836篇
  1987年   51215篇
  1986年   48334篇
  1985年   48880篇
  1984年   45438篇
  1983年   41687篇
  1982年   40761篇
  1981年   38573篇
  1980年   36261篇
  1979年   37185篇
  1978年   33873篇
  1977年   31049篇
  1976年   28549篇
  1975年   26887篇
  1974年   27708篇
  1973年   26646篇
  1972年   24767篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France.  相似文献   
5.
6.
7.
Background: Traumatic brain injury (TBI) results in verbal recall deficits and impaired processing of emotion encoded in facial appearance, prosody and the linguistic content of messages. Emotion facilitates memory (emotional memory advantage) for non-brain injured (NBI) individuals but the impact of emotion on verbal recall for linguistically encoded stimuli in TBI has not been explored.

Aims: The purpose of this study was to determine the effects of stimulus emotional content on verbal recall of words and paragraphs in TBI compared to NBI individuals.

Methods and procedures: Six 10-item lists, each with five emotional and five neutral words, and six paragraphs (three emotional, three neutral) were counterbalanced and presented in random order to 20 individuals with TBI and 44 NBI. The number of words from lists and the number of content units from paragraphs were compared for the two groups.

Outcomes and results: The NBI participants recalled more words from the lists and content units from the paragraphs than the individuals with TBI. Both groups recalled significantly more emotional than neutral words. NBI but not TBI participants had significantly greater recall for information in paragraphs with emotional content.

Conclusions: Participants with TBI showed impaired recall of words and paragraph content. Emotion facilitated word and paragraph content recall for neurotypical individuals but emotional memory advantage was limited to words for the TBI participants.  相似文献   

8.
9.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号